Article
Materials Science, Multidisciplinary
Huan Yuan, Jie Huang, Zehao Wang, Jinping Zhang, Yang Deng, Guiling Lin, Jiagui Wu, Junbo Yang
Summary: The ultra-compact multimode wavelength demultiplexer is small in size, multifunctional, with low insertion loss and maintain low crosstalk values.
RESULTS IN PHYSICS
(2021)
Article
Engineering, Electrical & Electronic
Yingjie Liu, Zi Wang, Yilin Liu, Xi Wang, Xiaoyuan Guo, Dongliang Li, Yong Yao, Qinghai Song, Jiangbing Du, Zuyuan He, Ke Xu
Summary: This study proposes and experimentally demonstrates a dual-polarization and mode-division multiplexed silicon photonic integrated circuit with ultra-small footprint, achieving satisfactory performance parameters within the wavelength range. With pixelated waveguide meta-structures, the device footprint is effectively reduced, and the insertion losses are below 1.4 dB and inter-mode cross talk is below -15 dB over a certain wavelength range.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Multidisciplinary Sciences
Jan-Wilke Henke, Arslan Sajid Raja, Armin Feist, Guanhao Huang, Germaine Arend, Yujia Yang, F. Jasmin Kappert, Rui Ning Wang, Marcel Moller, Jiahe Pan, Junqiu Liu, Ofer Kfir, Claus Ropers, Tobias J. Kippenberg
Summary: Integrated photonics and electron microscopy are merged to demonstrate coherent phase modulation of a continuous electron beam, enabling efficient electron-light scattering with potential applications in quantum control and sensing.
Article
Nanoscience & Nanotechnology
Jin Tao, Zhongzhu Liang, Guang Zeng, Dejia Meng, David R. Smith, Qing Huo Liu, Qingrui Yang, Menglun Zhang, Wei Pang, Jingqiu Liang, Tarik Bourouina
Summary: By integrating a perfect metamaterial absorber (PMA) with a film bulk acoustic wave resonator (FBAR) in a monolithic fashion, ultracompact uncooled infrared sensors of high sensitivity were produced. The resonance frequency of FBAR can be efficiently used as a sensor output, and the resulting sensor achieves a high absorption of 88% for an infrared spectrum centered at a wavelength of 8.2 μm.
Article
Engineering, Mechanical
Yunhao Zhang, Zhendong Sha, Guangyuan Su, Hao Zhou, Peng Jiang, Yongquan Liu, Bing Li, Tiejun Wang
Summary: Wave steering and control are important in physics and engineering. This study introduces a sparse layer of scatterers, called metafence, to block and guide mechanical waves. By tuning the restraining force and moment of the scatterers, complete control over the waves is achieved. The metafence offers advantages in size, configuration, and strength, and has potential applications in vibration control and energy harvesting.
EXTREME MECHANICS LETTERS
(2022)
Article
Optics
Huan Yuan, Jie Huang, Jingmin Han, Jinping Zhang, Zehao Wang, Yang Deng, Jiagui Wu, Junbo Yang
Summary: The novel RGB filter designed with ultra-compact size shows high performance and is suitable for optical device integration.
OPTICS COMMUNICATIONS
(2021)
Article
Engineering, Electrical & Electronic
Luca Nela, Remco Van Erp, Georgios Kampitsis, Halil Kerim Yildirim, Jun Ma, Elison Matioli
Summary: This article introduces the performance and potential of gallium nitride diodes, demonstrating the advantages of the gallium nitride-on-silicon structure and its application in power integrated circuits. By developing a new type of SBD, the pathway is paved for efficient and compact power converters.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2021)
Article
Chemistry, Multidisciplinary
Yizhi Zhang, Di Zhang, Juncheng Liu, Ping Lu, Julia Deitz, Jianan Shen, Zihao He, Xinghang Zhang, Haiyan Wang
Summary: Oxide-metal hybrid materials have attracted research interest for their multifunctionality, property coupling, and tunability. In this study, self-assembled HfO2-Au nanocomposites with ultra-fine Au nanopillars vertically aligned in a HfO2 matrix were fabricated. The addition of an ultra-thin TiN-Au buffer layer improved the film crystallinity and pillar uniformity. The hybrid VAN films exhibited an obvious plasmonic resonance at a lower wavelength than typical Au nanostructures and showed potential for future integrated optical and electronic switching devices.
Article
Engineering, Multidisciplinary
Li Xiang, Ping Yang, Tianjian Wu, Moke Zhou
Summary: This study proposes a new design of a FPGA-based pulse shrinking time-to-digital converter with high resolution achieved by a small number of configuration logic blocks. The study introduces a compact design and a semi-automatic calibration method, along with suggesting a linear continuous response system for FPGA-based TDC implementation.
Article
Chemistry, Multidisciplinary
Zhicheng Wang, Junbo Feng, Haitang Li, Yuqing Zhang, Yilu Wu, Yuqi Hu, Jiagui Wu, Junbo Yang
Summary: This article introduces an ultra-compact and broadband optical phased array (OPA) beam-splitting scheme using nano-inverse design, and significantly reduces the lateral dimensions of an OPA through a cascaded T-branch configuration. This offers a potential solution for the on-chip integration of large-scale OPAs.
Article
Multidisciplinary Sciences
Dongyuan Han, Jie Wang, Lorenzo Agosta, Ziang Zang, Bin Zhao, Lingmei Kong, Haizhou Lu, Irea Mosquera-Lois, Virginia Carnevali, Jianchao Dong, Jianheng Zhou, Huiyu Ji, Lukas Pfeifer, Shaik M. Zakeeruddin, Yingguo Yang, Bo Wu, Ursula Rothlisberger, Xuyong Yang, Michael Gratzel, Ning Wang
Summary: Lead-free perovskite light-emitting diodes prepared using tautomeric mixture coordination show improved ordering in the crystal structure, reduced recombination, and enhanced exciton binding energy.
Article
Chemistry, Multidisciplinary
Kun Yin, Yang Gao, Hao Shi, Shiqiang Zhu
Summary: In this study, an ultra-compact integrated optical switch based on phase-change materials (PCMs) is proposed. The device utilizes a pixelated sub-wavelength structure to achieve customized refractive indices, leading to improved performance. The simulation results show that the device has a low insertion loss and a high extinction ratio.
Article
Multidisciplinary Sciences
Dongxin Ma, Kebin Lin, Yitong Dong, Hitarth Choubisa, Andrew H. Proppe, Dan Wu, Ya-Kun Wang, Bin Chen, Peicheng Li, James Z. Fan, Fanglong Yuan, Andrew Johnston, Yuan Liu, Yuetong Kang, Zheng-Hong Lu, Zhanhua Wei, Edward H. Sargent
Summary: By using a fluorinated triphenylphosphine oxide additive to control cation diffusion and passivate surfaces, the efficiency and operating lifetimes of perovskite light-emitting diodes have been improved. Although reduced-dimensional perovskites show promise in increasing stability and photoluminescence quantum yield, challenges such as lower EQEs and inferior color purities remain.
Article
Engineering, Electrical & Electronic
Ajay Kumar Singh, Vivek Saraswat, Maryam Shojaei Baghini, Udayan Ganguly
Summary: This study demonstrates the hardware implementation of a recurrent SNN using low-power, low-area, and low-leakage band-to-band-tunneling (BTBT) based neurons. The proposed neurons achieve significant improvements in energy efficiency and standby power compared to existing architectures, enabling brain scale computing with similar area requirements.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS
(2022)
Article
Engineering, Electrical & Electronic
Haoxiang Chen, Tao Wang, Jianhong Yang, Hao Jia
Summary: This paper proposes a new concept of mode converter, which is both robust to wavelength variation and has an ultracompact footprint. By designing two different prototypes, efficient mode conversion is achieved. The simulation results show that the devices have low insertion loss and high signal-to-noise ratios within the wavelength range of 1500-1600 nm.
IEEE PHOTONICS JOURNAL
(2022)
